package p3;

/**
 * 抽象类 Num - 在这里给出对这个类的描述
 * 
 * @作者: 
 * 日期: 
 */
public class Num
{
    int ia, ib;
    double da , db;
    int op;
    
    Num(int ia , int ib)
    {
        this.op = 0;
        this.ia = ia;
        this.ib = ib;
    }
    
    Num(double da , double db)
    {
        this.op = 1;
        this.da = da;
        this.db = db;
    }
}
